Here's "How Big Tech Makes Their Billions": https://www.visualcapitalist.com/how-big-tech-makes-their-billions-2020/ via @VisualCap. A few thoughts:

1- 20% of #Amazon's revenues come from "third-party seller services". This puts in perspective the 'self-preferencing problem'. Also, ads represent ONLY 5%.

2- #Apple is very much a hardware company. No ads = no privacy issues?! Also, the % of its revenues in the Americas is lower than that of its competitors = most global company.

3- #Google is... advertising, but not 'really' relying on Google Network Members. Also interesting when it comes to antitrust.

4- #Microsoft is the most diversified of them all. Server and cloud services are the first source of income. Watch out for competition with Amazon AWS.

5- #Facebook is all about ads. Does it compete with Google? Well... if antitrust agencies were to say yes to that, none of them would be dominant... so... Also, its total revenue represents 'only' 25% of Amazon's revenue.

For more: I had a chance to glance through an early manuscript of @CompetitionProf, and the data in this thread corroborate his detailed company profiles and analysis of FAANG 10ks. Stay tuned (and pre-order). ;)